RE: Fuel - Are you worried about Cancer?
Practically everything related to RC seems to have the “WARNING: This product contains a chemical known to the state of CALIFORNIA to cause cancer and possible birth defects” label. A package of Dubro control horns (steel screw, aluminum nut, some nylon parts) had it. I honestly do not know if any of those items pose a threat but it seems unlikely. I believe some companies put the label on everything “just in case.”
Glow fuel does contain some nasty chemicals. I do not worry about it much, but I do clean my skin with Windex and a paper towel if I get a bunch of fuel on me. Of course, the Windex could be dangerous too.